I purchased this serum along with the retinol eye, day & night creams and the deep wrinkle filler. In one day, my skin looked better and I had the beginning of a deep line on the bottom of my mouth corner; I put the filler there first, massage it in a bit...then proceed with the rest. That deep line is almost gone and I've only been using these products about a week. I am very happy with the results that I am getting.
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